Android进程间通信经常会使用AIDL，简单方便，但是数据量有限制，超过一定值会报错：

 E  !!! FAILED BINDER TRANSACTION !!!  (parcel size = 2073744)

可以通过使用AIDL+MemoryFile传递大数据

新建AIDL接口：

interface OnFileListener{/*** Demonstrates some basic types that you can use as parameters* and return values in AIDL.*/void onFile(in ParcelFileDescriptor file);
}

添加监听接口

 void addFileListener(OnFileListener listener);

服务端发送数据

 MemoryFile imageFile = new MemoryFile(System.currentTimeMillis()+"image.data",image.length);imageFile.writeBytes(image,0,0,image.length);ParcelFileDescriptor pfd = getParcelFileDescriptor(imageFile);if (pfd!=null){listener.sendFile(pfd);}fun getParcelFileDescriptor(memoryFile: MemoryFile): ParcelFileDescriptor? {return try {val method: Method = MemoryFile::class.java.getDeclaredMethod("getFileDescriptor")method.setAccessible(true)val fd: FileDescriptor = method.invoke(memoryFile) as FileDescriptorParcelFileDescriptor.dup(fd)} catch (e: Exception) {e.printStackTrace()null}}

客户端接收数据

			service.addFileListener(new OnFileListener.Stub() {@Overridepublic void onFile(ParcelFileDescriptor pfd) throws RemoteException {try {FileInputStream fis = new FileInputStream(pfd.getFileDescriptor());ByteArrayOutputStream bos = new ByteArrayOutputStream();byte[] buf = new byte[1920*1080];int len;while ((len = fis.read(buf)) != -1) {bos.write(buf, 0, len);}                      bos.close();fis.close();pfd.close();}catch (Exception e){e.printStackTrace();}}});

实测实时传递Camera数据比较流畅